Hydraulic ejector



Patented June 19, 1923.

UNETE ilt? ABRAHAM R. G-RIESEMER, OF SAN FRANCISCO, CALIFORNIA.

HYDRAULIC EJECTOR.

Application filed August 9, 1922 Serial No. 580,655.

To all whom it may concern:

Be it known that I, ABRAHAM R. Gr ns- EMER, a citizen of the United States, residing at San Francisco, county of San Francisco, State of California, have invented certain new and useful Improvements in Hydraulic Ejectors; and I do declare the following to be a full, clear, and exact descrip tion of the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

This invention relates to improvements in devices for sinking holes, or in removing dirt etc from around piles and the like, and is especially adapted and valuable for use in connection with the sinking of holes in the beds of streams, bays and thelike when necessary for construction work such as building piers, wharves,bridges and similar structures.

The principal object of my invention is to provide a device for the purpose, preferably used in connection with a casing, by means of which any silt, mud, sand etc may be removed from predetermined points below the water or underground without the ne cessity of a diver or otherperson having to descend to the point from which the material isto be removed, and without the aid of any augers or other cutting implements, which soon wear out owing to the abrasive action of dirt thereon, and which necessitate the use of long and heavy driving shafts.

The advantages with regard to speed and efiiciency in accomplishing the work, with the attendant reduction of labor and other costs, will be appreciated by those in the profession.

For instance, the present method when an under-water hole is to be sunk for the reception of piers and the like is to employ a diver to loosen or break up the material to be removed before a suction or siphon mechanism is applied, is a very slow and expensive procedure, which the use of my device eliminates.

My apparatus is also extremely useful in removing the material from around wooden piles already sunk, when it is desired to protect them from the action of teredos and similar destructive organisms by placing a shell of concrete around the underwater portion of the pile.

A. further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly efiective for the purposes for which it is de. signed. r I These objects Iaccomplish by means of such structure and relative arrangementof parts as will fully appear by a perusal of the following specification and claims.

1n the drawings similar characters of ref erence indicate corresponding parts in the several views:

Fig. 1 is a side elevation of the device- Fig. 2 is a sectional elevation of the body alone.

Fig. 3 is a cross sectionon the line 3-3 of Fig. l. 1

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the body of the device, preferably made as a casting, and adapted to be lowered into a casing 2 of any desired form, which is first lowered and sunk around a pile or in a position to outline a hole to be sunk.

Parallel bores 3 and 4c of suitable sizes relative to each other extend from the top to the bottom of the body 1, while another bore 5, spaced from the others, extends from the top of the body to a point short of the bottom thereof. I

Removably attached to the body at the nozzle 6 while at the upper end of said bore is a discharge pipe 7. Likewise removably attached to the body at the lower end of the bored; is a pressure jet or hydraulic nozzle 8, having a reduced outlet as shown. This member preferably projects somewhat below the pipe 6, and being removable, nozzles of different lengths and sizes of openings may be used as different conditions encoun tered may demand.

A pressure pipe 9 is connected to the body at the upper end of the bore a, and is adapted at its upper end to be connected to a force pump and the like, so that a force of water of any desired pressure may be sent through the nozzle 8.

A high-pressure steam or air pipe 10 is connected to the body 1 at the outer end of the bore 5.

It is to be understood of course that the pipes 7, 9 and 10 may be made up of as many detachable lengths as necessary, depending on the depth to which the body is to be lowered from the operating mechanism at the surface,

lower end of the bore 3 is a suction pipeor In, operation, the body is lowered'inside' the casing to the material to be removed, being suspended from the pipes. lVater under any suitable pressure is then forced through the nozzle 8 which, acting on the.

mud, silt and the like, loosens the same and causes it to be thoroughly stirred and mixed with the v surroundingv water.

At the same time air or steam under high pressure is then forced through the pipe 10 and thence into the jet 11'. Issuing from said jet into the chamber 3, the well-known siphoning action is set up which creates a suction in the pipe 6, the water with the material loosened by the water-blast in. suspension o solution therein being drawn into said pipe and then forced upwardly to the surface by the air or steam pressure.

The device is of course lowered as the material is'loosened and removed, until the desired depth has'been attained.

I have found from experience that the device will function efliciently in any kind of material which may be encountered, other than solid rock.

The device may also be used independently of a casing,'dependingon the work to be performed, and for subterranean operations as well as those of a submarine nature.

If the device is operating at a considerable depth, the siphon 11 may require assistance in order to maintain a constant dischargeflow.

Such assistance may easily be renderedby interposing additional siphons in the discharge line at as many points at may be necessary to boost the discharge, these From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

WVhile this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations fronrsuch detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims. v

Having thusdescribe'd my invention, what I claim as new and useful and desire to secure by Letters Patent is:

1. A hydraulic ejector comprising a body adapted to fit in a casing, a pair of vertical andspace'd boresthrough the body, suction and pressure nozzles attached to and depending from the body in alinement with said bores, suction and pressure pipes attached-to and projecting upwardly from the body inalinement with the respective bores, a third vertical bore in the body closed at the lower end, a jet from said third bore projecting into the bore to which the suction pipe' is connected; and a pressure pipe at tached to and projecting upwardly from the body in alinement with said third bore.

2. A hydraulic ejector including a body, a vertical bore through said body shaped to function as a siphoning chamber and having its largest diameter at its lower end, a jet member projecting upwardly into the chamber and terminating adjacent the'upper end of the enlarged portion thereof, and discharge and suction pipes connected to the body at the upper andlower ends of said chamber.

In testimony whereof I aflix my signature.

ABRAHAM R. GRIESEMER. 

